u-boot.git/arch/sandbox/cpu, branch master

sandbox: Adjust how OS-interface files are built

2026-04-07T17:33:04+00:00

The current mechanism uses a completely separate build rule for each
file which must be built with system headers. This is tricky to
maintain.

Add a foreach template in the sandbox cpu Makefile which generates the
custom compile rules from a CFLAGS_USE_SYSHDRS list. This keeps the
rules data-driven without needing changes to the common
scripts/Makefile.lib, which could affect other architectures.

Move initjmp.o into the template since it uses the same pattern. Add
sdl.o to the list too, with an override for its command since it also
needs -fshort-wchar removed and -fno-lto added.

Signed-off-by: Simon Glass

sandbox: Update linker scripts to ensure appended device tree is aligned

2026-01-20T18:07:23+00:00

With commit 0535e46d55d7 ("scripts/dtc: Update to upstream version
v1.7.2-35-g52f07dcca47c") it is now a fatal error to U-Boot if our
device tree is not 8-byte aligned. In commit 85f586035d75 ("ARM: OMAP2+:
Pad SPL binary to 8-byte alignment before DTB") Beleswar Padhi explains
that we must have ALIGN(x) statements inside of a section to ensure that
padding is included and not simply that the linker address counter is
incremented. To that end, this patch:
- Aligns the final section before _image_binary_end (for xPL phases) by
  8-bytes by adding '. = ALIGN(8);' to the final section before the
  symbol.
- Ensure that we do have alignment by adding an ASSERT so that when not
  aligned we fail to link (and explain why).

Signed-off-by: Tom Rini

sandbox: Add more dummy cache functions

2025-10-08T22:12:46+00:00

In order for cmd/cache.c to link we need to add dummy icache functions
to mirror the dummy dcache functions as well as another dcache flush
function.

Signed-off-by: Tom Rini

sandbox: use env_get() for time offset instead of getenv()

2025-09-24T17:03:24+00:00

The sandbox time offset is intended to be controlled via the U-Boot
environment, not the host process environment. Update os_get_time_offset()
to use env_get() instead of the libc getenv().

Leave other getenv() uses (e.g. U_BOOT_PERSISTENT_DATA_DIR,
UBOOT_SB_FUZZ_TEST) unchanged, since those refer to host environment
variables needed by sandbox tests.

Signed-off-by: Osama Abdelkader

Revert "sandbox: replace deprecated getenv() with env_get()"

2025-09-12T22:57:39+00:00

While testing changes, I missed that Gitlab had failed CI with pytest
failures due to this change.

This reverts commit 4c822970d366415e717730606734e815993a70bb.

Cc: Osama Abdelkader 
Signed-off-by: Tom Rini

sandbox: replace deprecated getenv() with env_get()

2025-09-12T20:35:46+00:00

use env_get() instead of getenv() for consistency.

Signed-off-by: Osama Abdelkader

Merge patch series "sandbox: align LMB memory"

2025-06-26T19:45:43+00:00

Heinrich Schuchardt  says:

To implement the EFI_SYSTEM_TABLE_POINTER we need 4 MiB aligned
memory.

On the sandbox LMB uses addresses relative to the start of a page aligned
RAM buffer allocated with mmap(). This leads to a mismatch of alignment
between EFI which uses pointers and LMB which uses phys_addr_t.

Ensure that the RAM buffer used for LMB is 4 MiB aligned.

Provide a unit test for efi_alloc_aligned_pages() verifying this alignment.

Do not overwrite RAM size in dram_init().

Link: https://lore.kernel.org/r/20250608075428.32631-1-heinrich.schuchardt@canonical.com

sandbox: align LMB memory

2025-06-26T19:45:33+00:00

To implement the EFI_SYSTEM_TABLE_POINTER we need 4 MiB aligned
memory.

On the sandbox LMB uses addresses relative to the start of a page aligned
RAM buffer allocated with mmap(). This leads to a mismatch of alignment
between EFI which uses pointers and LMB which uses phys_addr_t.

Ensure that the RAM buffer used for LMB is 4 MiB aligned.

Signed-off-by: Heinrich Schuchardt 
Reviewed-by: Tom Rini 
Reviewed-by: Ilias Apalodimas

spl: Rename jump_to_image_no_args()

2025-06-13T19:22:53+00:00

This function is currently a misnomer at times as we have cases where it
passes arguments to the image. In preparation for making that be a more
common case rename this function to jump_to_image(...). In order to do
this, rename jump_to_image in board_init_r(...) to jumper so that we do
not have a conflict.

Signed-off-by: Simon Glass 
[trini: Reword the commit message, adding missing cases of
        jump_to_image_no_args()]
Signed-off-by: Tom Rini

sandbox: add initjmp()

2025-04-23T19:19:44+00:00

Add initjm[() to sandbox, a non-standard extension to setjmp()/
longjmp() allowing to initialize a jump buffer with a function pointer
and a stack pointer. This will be useful to later introduce threads.
With this new function it becomes possible to longjmp() to a particular
function pointer (rather than to a point previously reached during
program execution as is the case with setjmp()), and with a custom stack.
Both things are needed to spin off a new thread. Then the usual
setjmp()/longjmp() pair is enough to save and restore a context, i.e.,
switch thread. The implementation is taken verbatim from barebox [1] with
the exception of the additional stack_sz argument. It is quite complex
because contrary to U-Boot platform code we don't know how the system's
C library implements the jump buffer, so we can't just write the function
and stack pointers into it.

[1] https://github.com/barebox/barebox/blob/b2a15c383ddc/arch/sandbox/os/setjmp.c

Signed-off-by: Jerome Forissier